What does “[removed]void(0)” mean?

Question

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I\'ve seen such hrefs many times, but I don\'t know what exactly

Answer 1

javascript: URLs aside; this is where void can be used to write shorter code:

var error1 = false,
    error2 = false,
    error3 = false;

function error1() {

    error1 = true;
}

function myFunction() {

    // You can easily return and call a function at once, if you don't care about myFunction's return value
    if (!someCondition1)
        return error1();

    // What if you want to set a value first?
    if (!someCondition2) {
        error2 = true;
        return
    }

    // Shortest way to return and set a value at once
    if (!someCondition3)
        return void(error3 = true);

    // More code goes here
}